void dmac_configureDmaCfgLLI(int ch, DmacDesc *lli, uint32_t cfg);
void dmac_setSourcesLLI(int ch, DmacDesc *lli, uint32_t src, uint32_t dst, uint32_t desc);
void dmac_configureDmacLLI(int ch, DmacDesc *lli, size_t transfer_size, uint32_t cfg, uint32_t ctrla, uint32_t ctrlb);
-bool dmac_isLLIDone(int ch);
-bool dmac_waitLLIDone(int ch);
void dmac_setSources(int ch, uint32_t src, uint32_t dst);
void dmac_configureDmac(int ch, size_t transfer_size, uint32_t cfg, uint32_t ctrla, uint32_t ctrlb);
int dmac_start(int ch);
-int dmac_stop(int ch);
-bool dmac_isDone(int ch);
-bool dmac_waitDone(int ch);
+void dmac_stop(int ch);
int dmac_error(int ch);
bool dmac_enableCh(int ch, dmac_handler_t handler);
void dmac_init(void);